Home / 20,182.70-30,237.60-12,382.40

Finding the Fourth Proportional to 20,182.70, 30,237.60 and 12,382.40

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Solution

The fourth proportional to 20,182.70, 30,237.60 and 12,382.40 is: 18,551.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,182.70 : 30,237.60 = 12,382.40 : x
  2. Step 2: Convert to fraction form
    20,182.70/30,237.60 = 12,382.40/x
  3. Step 3: Cross multiply
    20,182.70x = 30,237.60 × 12,382.40
  4. Step 4: Simplify right side
    20,182.70x = 374,414,058.24
  5. Step 5: Solve for x
    x = 374,414,058.24/20,182.70
  6. Step 6: Final answer
    x = 18,551.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.